The cholesterol levels of young women aged 20 to 34 vary approximately normal with mean 185 milligrams per deciliter and standard deviation 39 mg/dl. Cholesterol levels for men vary with mean 222mg/dl and standard deviation 37 mg/dl Sandy's cholesterol level is 220 her fathers is level is 250 who's is higher
statistics - PsyDAG, Thursday, September 6, 2012 at 2:31am
Z = (score-mean)/SD
Compare Z scores.